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Basename & Dirname In Perl

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These two Perl functions implement approximations of the UNIX utilities `basename` and `dirname`, though basename() automatically strips off the last extension no matter what.
sub basename($) {
 my $file = shift;
 $file =~ s!^(?:.*/)?(.+?)(?:\.[^.]*)?$!$1!;
 return $file;
}

sub dirname($) {my $file = shift; $file =~ s!/?[^/]*/*$!!; return $file; }
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